Human factors is a general term encompassing many areas, aerospace physiology being one. First and foremost, an Aerospace Physiologist (AP) is about PREVENTION. The purpose of the AP is to counter all physiological threats facing today’s flight crews. APs counter physiological threats by providing the various aeromedical safety programs which offer specialized consultation, technical liaison, evaluation, and recommendations in all aeromedical aspects of aviation safety. APs serve multifaceted roles within safety, operations, and training programs.